Figure 9. LM and SEM micrographs of pollen grains. (a3)-(d3) Quercus lobata (e3)-(h3) Quercus pacifica (i3)-(l3) Quercus palmeri (m3)-(n3) Quercus parvula (o3)-(p3) Quercus (q3)-(t3) Quercus sadleriana (u3)-(x3) Quercus tomentella